Differential outcomes facilitate same/different concept learning

Commonly recognized, the training procedure one employs often affects the results they obtain. Here, we demonstrate for the first time that abstract-concept learning is affected by employing a differential-outcomes procedure. The differential-outcome effect has been shown to occur for item-specific strategies but has not been established for relational strategies. To test whether different-outcome expectancies can facilitate a relational strategy, eight pigeons were trained and tested in a two-item same/different task with pictures. After pecking an upper picture, they pecked a lower picture if the pictures were the same or a white rectangle if the pictures were different. Two groups of pigeons were rewarded with either different outcomes (sounds and food amounts) or same outcomes. Both groups were trained to criterion with successively larger picture sets (8–1,024 items) and were transfer tested with novel pictures following each acquisition. With the smallest training sets, neither group showed any novel-stimulus transfer. But after acquiring the task with 32 pictures, the different-outcomes group responded more accurately to novel pictures than the same-outcome group. As the training set-size increased, both groups’ transfer performance converged and became equivalent to training performance. These results show for the first time that training with different outcomes facilitates abstract-concept learning.     

Men's likelihood of sexual aggression: the influence of alcohol,sexual arousal,and violent pornography

Previous research findings have indicated that both alcohol intoxication and violent pornography exposure may contribute to increased sexual aggression by men. This study used an experimental paradigm to examine the effects of a moderate alcohol dose, alcohol‐related beliefs, and victim response on men's self‐reported likelihood of committing sexual aggression. A community sample of male social drinkers (N=84) participated in an experiment in which they read an eroticized rape depiction after completing an alcohol administration protocol. The stimulus story varied whether the victim, who initially expressed unwillingness to engage in sexual activity, expressed pleasure or distress in response to the man physically forcing her to perform several explicit sex acts. A path analytic model illustrated that participants' self‐reported likelihood of behaving like the sexual aggressor in the story was directly related to their own sexual arousal. Heightened sexual arousal was reported by participants who had consumed alcohol, those who read the victim‐pleasure story, and those who believed that drinking women are sexually vulnerable. Results suggest that sexual arousal to violent pornography, as influenced by acute alcohol intoxication and other factors, may be an important component of men's perceptions of their own sexual aggression likelihood. Aggr. Behav. 32:581–589, 2006. © 2006 Wiley‐Liss, Inc.     

Relationships Between Adult Workers' Spiritual Well‐Being and Job Satisfaction: A Preliminary Study

The authors studied the relationships between adult workers' spiritual well‐being and job satisfaction. Two hundred participants completed 2 instruments: the Spiritual Well‐Being Scale (C. W. Ellison & R. F. Paloutzian, 1982) and the Minnesota Satisfaction Questionnaire Short Form (D. J. Weiss, R. V. Dawis, G. W. England, & L. H. Lofquist, 1967). A bivariate correlational analysis showed spiritual well‐being, religious well‐being, and existential well‐being to be positively related to job satisfaction for this sample. With a forced‐entry multiple regression analysis, overall spiritual well‐being was found to have a moderate influence, existential well‐being had a much stronger influence, and religious well‐being had a minimal influence all on, general job satisfaction.     

Why Do People Engage in Collective Action? Revisiting the Role of Perceived Effectiveness

Research has shown limited support for the notion that perceived effectiveness of collective action is a predictor of intentions to engage in collective action. One reason may be that effectiveness has been in terms of whether the action will influence key decision makers. We argue that the effectiveness of collective action might be judged by other criteria, such as whether it influences third parties, builds an oppositional movement, and expresses values. Two hundred and thirty one attendees at a rally rated the effectiveness of the rally and their intentions to engage in future collective action. For those participants who were not members of an organization, intentions were linked to the perceived effectiveness of the rally in expressing values and influencing the public. For those who were members of an organization, intentions were linked only to the effectiveness of the rally in building an oppositional movement.     

Choice biases in delayed matching-to-sample duration with pigeons: Manipulations of ITI and delayillumination

Two experiments investigated the effects of similarity between intertrial interval (ITI) and delay illumation on the choose-short effect. Different groups of pigeons learned to match 'short' (2 s) and 'long' (6 or 8 s) food samples to green and red test stimuli in a matchingto-sample procedure with a 5-s training delay.Subsequent 10- and 20-s delay tests revealed choose-short effects if the ITI and delay were both illuminated (i.e., group ON-ON), if the ITI and delay were both dark (i.e., group OFF-OFF), and if the ITI was illuminated and the delay was dark (i.e., group ON-OFF). In addition, either a choose-short effect or a chooselong effect was observed if the ITI was dark and the delay was illuminated (i.e., group OFFON). Results are incompatible with the confusion/instructionalfailure viewof the choose-short effect.     

Why Ask Why? Logical Fallacies in the Diagnosis of Fetal Alcohol Spectrum Disorder

A diagnosis of Fetal Alcohol Spectrum Disorder (FASD) ascribes cause to developmental disability; however, there are logical issues in causation with ethical implications. This article focuses on the use of fallacious logic (affirming the consequent) in FASD, focusing on the Canadian Guidelines for diagnosis, and knowledge translation issues from science to practice. The clinician’s logical fallacy is an ethical issue of veracity in the clinician–patient relationship; this then leads to issues of nonmaleficence, because the diagnosis in turn blames the mother for her child’s difficulties. Suggestions for revised diagnostic practices that avoid allusions to causation and responsibility are discussed.